What is PM?

S0-SA5-0763

Grade Level:

Class 2

Time, Computing, Daily Life

Definition

What is it?

PM stands for 'Post Meridiem', which means 'after midday' in Latin. It is used to indicate the time from noon (12:00 PM) up until midnight (12:00 AM). So, if it's PM, it's the afternoon or evening.

Simple Example

Quick Example

If your favourite cricket match starts at '3 PM', it means the match begins in the afternoon, after lunch. You'd watch it when the sun is still up, but not as high as it was at 12 PM.

Worked Example

Step-by-Step

Let's say your school closes at 3 PM.
---Step 1: Understand what 'PM' means. It means 'after midday'.
---Step 2: Midday is 12:00 PM (noon).
---Step 3: So, 3 PM means 3 hours after 12:00 PM.
---Step 4: Counting 3 hours from 12:00 PM gives us 1:00 PM, 2:00 PM, 3:00 PM.
---Step 5: This means your school closes in the afternoon.
ANSWER: 3 PM is 3 o'clock in the afternoon.

Why It Matters

Understanding PM helps us organize our daily schedules, from school timings to movie shows. It's crucial in fields like transportation for flight and train schedules, and in event management for planning concerts or festivals. Knowing AM/PM helps everyone be on time!

Common Mistakes

MISTAKE: Thinking 12 PM is midnight. | CORRECTION: 12 PM is noon (midday), when the sun is usually highest. 12 AM is midnight.

MISTAKE: Confusing AM and PM, especially around noon and midnight. | CORRECTION: Remember AM is 'morning' (Ante Meridiem) and PM is 'afternoon/evening' (Post Meridiem).

MISTAKE: Writing 12:00 AM for noon. | CORRECTION: 12:00 PM is noon. 12:00 AM is midnight.

Practice Questions

Try It Yourself

QUESTION: If your favourite TV show starts at 8 PM, will you watch it in the morning or evening? | ANSWER: Evening

QUESTION: Your parents told you to finish your homework by 5 PM. If you start at 3 PM, how many hours do you have? | ANSWER: 2 hours

QUESTION: A train leaves Delhi at 10 AM and reaches Mumbai after 15 hours. What time (in AM/PM) will it reach Mumbai? | ANSWER: 1 AM (the next day)

MCQ

Quick Quiz

What does 'PM' stand for?

Past Morning

Post Meridiem

Present Moment

Prime Minister

The Correct Answer Is:

PM stands for Post Meridiem, which is Latin for 'after midday'. It's a term used in the 12-hour clock system to denote time after noon.

Real World Connection

In the Real World

When you book a ticket online for a movie, say for a 6:30 PM show, the system uses PM to clearly tell you it's an evening show. Similarly, when you check the delivery time for your online food order, it might say 'delivery by 7:00 PM', ensuring you know it will arrive in the evening.

Key Vocabulary

Key Terms

Meridiem: Latin word for 'midday' or 'noon' | Noon: 12 o'clock in the middle of the day | Midnight: 12 o'clock in the middle of the night | 12-hour clock: A time system that uses AM and PM to divide the day into two 12-hour periods.

What's Next

What to Learn Next

Now that you understand PM, you should learn about 'What is AM?'. Knowing both AM and PM will help you fully understand the 12-hour clock system and tell time accurately for all parts of the day. Keep up the great work!